1.
honest person; straightforward person
A person who is truthful and sincere. Can be used positively (praising honesty) or with a nuance of being naive or too trusting.
Usage
The expression 正直者が馬鹿を見る (honest people get the short end of the stick) is a well-known proverb expressing the idea that being too honest can be disadvantageous. In Japanese folk tales (昔話), the honest character is typically rewarded while the dishonest one is punished.